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Process simulation of coal-direct chemical looping gasification for syngas production

机译:合成气生产煤 - 直接化学循环气化的过程模拟

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摘要

The coal gasification process is used in the commercial production of syngas as a means toward the clean use of coal. In this paper, the process of syngas production via the coal-direct chemical looping gasification process (CDCLG) is modeled under thermochemical equilibrium with the Gibbs free energy approach, and the model is developed using a complete and comprehensive simulation model. Due to the kinetic limits of char gasification, the carbon conversion efficiency is not suggested to be larger than 0.9 in the fuel reactor during the CDCLG process. Besides, the simulation results suggest the residual carbon should be burnt in the air reactor. Moreover, the effects of various conditions, which include carbon conversion, temperature, pressure and the steam feed ratio, on the input and energy output parameters, including the air feed ratio, efficiency of electricity and syngas quality, are studied and revealed in this paper.
机译:煤气化过程用于合成气的商业生产作为煤炭清洁使用的手段。 在本文中,通过煤直接化学环路气化过程(CDCLG)的合成气产量在热化学平衡下与GIBBS自由能方法进行建模,并且使用完整和综合仿真模型开发了该模型。 由于CHAR气化的动力学限制,在CDCLG过程中,碳转化效率并未表明燃料反应器中的大于0.9。 此外,仿真结果表明残留碳应在空气反应器中燃烧。 此外,在本文中,研究并揭示了各种条件包括碳转化,温度,压力和蒸汽进给比的各种条件,包括碳转化,温度,压力,包括空气进给比,电力和合成气质量的效率 。

著录项

  • 来源
    《RSC Advances》 |2017年第87期|共9页
  • 作者单位

    Guizhou Inst Technol Chem Engn Inst Guiyang 550003 Guizhou Peoples R China;

    Western Kentucky Univ Dept Chem Inst Combust Sci &

    Environm Technol Bowling Green KY 42101 USA;

    Chongqing Univ Coll Mat Sci &

    Engn Chongqing 400044 Peoples R China;

    Chongqing Univ Coll Mat Sci &

    Engn Chongqing 400044 Peoples R China;

    Chongqing Univ Coll Mat Sci &

    Engn Chongqing 400044 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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